{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "The rats were administered 0 . 5 ml water containing NaF ( 100 mg / l ) and EGb ( 120 mg / kg ) per day via gavage ."}
{"Chemical": ["NaF"]}